1 /* 2 * Copyright (C) 2011 Google Inc. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package benchmarks.regression; 18 19 import com.google.caliper.Param; 20 import java.util.Locale; 21 import java.util.regex.Matcher; 22 import java.util.regex.Pattern; 23 24 public final class SchemePrefixBenchmark { 25 26 enum Strategy { JAVA()27 JAVA() { 28 @Override String execute(String spec) { 29 int colon = spec.indexOf(':'); 30 31 if (colon < 1) { 32 return null; 33 } 34 35 for (int i = 0; i < colon; i++) { 36 char c = spec.charAt(i); 37 if (!isValidSchemeChar(i, c)) { 38 return null; 39 } 40 } 41 42 return spec.substring(0, colon).toLowerCase(Locale.US); 43 } 44 45 private boolean isValidSchemeChar(int index, char c) { 46 if ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z')) { 47 return true; 48 } 49 if (index > 0 && ((c >= '0' && c <= '9') || c == '+' || c == '-' || c == '.')) { 50 return true; 51 } 52 return false; 53 } 54 }, 55 REGEX()56 REGEX() { 57 private final Pattern pattern = Pattern.compile("^([a-zA-Z][a-zA-Z0-9+\\-.]*):"); 58 59 @Override String execute(String spec) { 60 Matcher matcher = pattern.matcher(spec); 61 if (matcher.find()) { 62 return matcher.group(1).toLowerCase(Locale.US); 63 } else { 64 return null; 65 } 66 } 67 }; 68 69 execute(String spec)70 abstract String execute(String spec); 71 } 72 73 @Param Strategy strategy; 74 timeSchemePrefix(int reps)75 public void timeSchemePrefix(int reps) { 76 for (int i = 0; i < reps; i++) { 77 strategy.execute("http://android.com"); 78 } 79 } 80 } 81